隐藏导航栏

/android11/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml

diff --git a/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml b/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml
index ba6b6956f1..6db2348df8 100644
--- a/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml
+++ b/frameworks/base/packages/SystemUI/res/layout/navigation_bar.xml
@@ -22,6 +22,7 @@xmlns:systemui="http://schemas.android.com/apk/res-auto"android:layout_height="match_parent"android:layout_width="match_parent"
+    android:visibility="gone"android:background="@drawable/system_bar_background"><com.android.systemui.CornerHandleView
@@ -42,6 +43,7 @@<com.android.systemui.statusbar.phone.NavigationBarInflaterViewandroid:id="@+id/navigation_inflater"android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="match_parent" 
+        android:visibility="gone"/>

隐藏状态栏

/android11/frameworks/base/packages/SystemUI/res/layout/status_bar.xml

diff --git a/frameworks/base/packages/SystemUI/res/layout/status_bar.xml b/frameworks/base/packages/SystemUI/res/layout/status_bar.xml
index f8db97dbf8..3427430fa5 100644
--- a/frameworks/base/packages/SystemUI/res/layout/status_bar.xml
+++ b/frameworks/base/packages/SystemUI/res/layout/status_bar.xml
@@ -26,6 +26,7 @@android:id="@+id/status_bar"android:orientation="vertical"android:focusable="false"
+    android:visibility="gone"android:descendantFocusability="afterDescendants"android:accessibilityPaneTitle="@string/status_bar">